a(n) = n-th derivative of Sec(Exp(z)-1) at z=0.
A139134
a(n) = n-th derivative of Sec(Exp(z)-1) at z=0.
Terms
- a(0) =1a(1) =0a(2) =1a(3) =3a(4) =12a(5) =65a(6) =417a(7) =3094a(8) =26243a(9) =250371a(10) =2652754a(11) =30910935a(12) =392895789a(13) =5409783392a(14) =80214503397
External references
- oeis: A139134